2-(Methyldithio)isobutyraldehyde C5H10OS2 structure

C5H10OS2 structure
Molecular Formula C5H10OS2
Average mass 150.262 Da
Density 1.1±0.1 g/cm3
Boiling Point 184.2±23.0 °C at 760 mmHg
Flash Point 61.7±12.7 °C
Molar Refractivity 41.4±0.3 cm3
Polarizability 16.4±0.5 10-24cm3
Surface Tension 37.0±3.0 dyne/cm
Molar Volume 136.4±3.0 cm3

Predicted data is generated using the ACD/Labs Percepta Platform – PhysChem Module

Density: 1.1±0.1 g/cm3
Boiling Point: 184.2±23.0 °C at 760 mmHg
Vapour Pressure: 0.7±0.4 mmHg at 25°C
Enthalpy of Vaporization: 42.0±3.0 kJ/mol
Flash Point: 61.7±12.7 °C
Index of Refraction: 1.519
Molar Refractivity: 41.4±0.3 cm3
#H bond acceptors: 1
#H bond donors: 0
#Freely Rotating Bonds: 3
#Rule of 5 Violations: 0
ACD/LogP: 2.23
ACD/LogD (pH 5.5): 2.12
ACD/BCF (pH 5.5): 23.94
ACD/KOC (pH 5.5): 337.93
ACD/LogD (pH 7.4): 2.12
ACD/BCF (pH 7.4): 23.94
ACD/KOC (pH 7.4): 337.93
Polar Surface Area: 68 Å2
Polarizability: 16.4±0.5 10-24cm3
Surface Tension: 37.0±3.0 dyne/cm
Molar Volume: 136.4±3.0 cm3

Predicted data is generated using the US Environmental Protection Agency’s EPISuite™

 
 Log Octanol-Water Partition Coef (SRC):
 Log Kow (KOWWIN v1.67 estimate) = 1.75

 Boiling Pt, Melting Pt, Vapor Pressure Estimations (MPBPWIN v1.42):
 Boiling Pt (deg C): 210.95 (Adapted Stein & Brown method)
 Melting Pt (deg C): -2.16 (Mean or Weighted MP)
 VP(mm Hg,25 deg C): 0.208 (Mean VP of Antoine & Grain methods)

 Water Solubility Estimate from Log Kow (WSKOW v1.41):
 Water Solubility at 25 deg C (mg/L): 2443
 log Kow used: 1.75 (estimated)
 no-melting pt equation used

 Water Sol Estimate from Fragments:
 Wat Sol (v1.01 est) = 7379.1 mg/L

 ECOSAR Class Program (ECOSAR v0.99h):
 Class(es) found:
 Aldehydes

 Henrys Law Constant (25 deg C) [HENRYWIN v3.10]:
 Bond Method : 1.97E-006 atm-m3/mole
 Group Method: Incomplete
 Henrys LC [VP/WSol estimate using EPI values]: 1.683E-005 atm-m3/mole

 Log Octanol-Air Partition Coefficient (25 deg C) [KOAWIN v1.10]:
 Log Kow used: 1.75 (KowWin est)
 Log Kaw used: -4.094 (HenryWin est)
 Log Koa (KOAWIN v1.10 estimate): 5.844
 Log Koa (experimental database): None

 Probability of Rapid Biodegradation (BIOWIN v4.10):
 Biowin1 (Linear Model) : 0.7767
 Biowin2 (Non-Linear Model) : 0.9982
 Expert Survey Biodegradation Results:
 Biowin3 (Ultimate Survey Model): 2.6773 (weeks-months)
 Biowin4 (Primary Survey Model) : 3.6742 (days-weeks )
 MITI Biodegradation Probability:
 Biowin5 (MITI Linear Model) : 0.7454
 Biowin6 (MITI Non-Linear Model): 0.8004
 Anaerobic Biodegradation Probability:
 Biowin7 (Anaerobic Linear Model): 0.3857
 Ready Biodegradability Prediction: NO

Hydrocarbon Biodegradation (BioHCwin v1.01):
 Structure incompatible with current estimation method!

 Sorption to aerosols (25 Dec C)[AEROWIN v1.00]:
 Vapor pressure (liquid/subcooled): 25.6 Pa (0.192 mm Hg)
 Log Koa (Koawin est ): 5.844
 Kp (particle/gas partition coef. (m3/ug)):
 Mackay model : 1.17E-007 
 Octanol/air (Koa) model: 1.71E-007 
 Fraction sorbed to airborne particulates (phi):
 Junge-Pankow model : 4.23E-006 
 Mackay model : 9.37E-006 
 Octanol/air (Koa) model: 1.37E-005 

 Atmospheric Oxidation (25 deg C) [AopWin v1.92]:
 Hydroxyl Radicals Reaction:
 OVERALL OH Rate Constant = 247.8815 E-12 cm3/molecule-sec
 Half-Life = 0.043 Days (12-hr day; 1.5E6 OH/cm3)
 Half-Life = 0.518 Hrs
 Ozone Reaction:
 No Ozone Reaction Estimation
 Fraction sorbed to airborne particulates (phi): 6.8E-006 (Junge,Mackay)
 Note: the sorbed fraction may be resistant to atmospheric oxidation

 Soil Adsorption Coefficient (PCKOCWIN v1.66):
 Koc : 22.34
 Log Koc: 1.349 

 Aqueous Base/Acid-Catalyzed Hydrolysis (25 deg C) [HYDROWIN v1.67]:
 Rate constants can NOT be estimated for this structure!

 Bioaccumulation Estimates from Log Kow (BCFWIN v2.17):
 Log BCF from regression-based method = 0.644 (BCF = 4.41)
 log Kow used: 1.75 (estimated)

 Volatilization from Water:
 Henry LC: 1.97E-006 atm-m3/mole (estimated by Bond SAR Method)
 Half-Life from Model River: 365.5 hours (15.23 days)
 Half-Life from Model Lake : 4091 hours (170.4 days)

 Removal In Wastewater Treatment:
 Total removal: 2.18 percent
 Total biodegradation: 0.09 percent
 Total sludge adsorption: 1.98 percent
 Total to Air: 0.11 percent
 (using 10000 hr Bio P,A,S)

 Level III Fugacity Model:
 Mass Amount Half-Life Emissions
 (percent) (hr) (kg/hr)
 Air 0.0762 1.04 1000 
 Water 36.6 900 1000 
 Soil 63.2 1.8e+003 1000 
 Sediment 0.11 8.1e+003 0 
 Persistence Time: 710 hr




 

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